ZHCSSK0P April 2004 – August 2024 TPS2041B , TPS2042B , TPS2043B , TPS2044B , TPS2051B , TPS2052B , TPS2053B , TPS2054B
PRODUCTION DATA
- 1
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 General Switch Catalog
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Parameter Measurement Information
- 8 Detailed Description
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Revision History
- 14Mechanical, Packaging, and Orderable Information
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- D|16
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
訂購信息
9.2.2.1.1 USB Power-Distribution Requirements
USB can be implemented in several ways, and, regardless of the type of USB device being developed, several power-distribution features must be implemented.
- Hosts and self-powered hubs must:
- Current-limit downstream ports
- Report overcurrent conditions on USB VBUS
- Bus-powered hubs must:
- Enable/disable power to downstream ports
- Power up at <100 mA
- Limit inrush current (<44 ? and 10 μF)
- Functions must:
- Limit inrush currents
- Power up at <100 mA
The feature set of the TPS20xxB allows them to meet each of these requirements. The integrated current-limiting and overcurrent reporting is required by hosts and self-powered hubs. The logic-level enable and controlled rise times meet the need of both input and output ports on bus-powered hubs, as well as the input ports for bus-powered functions (see Figure 9-13 through Figure 9-16).
Figure 9-13 Hybrid Self and Bus-Powered Hub Implementation, TPS2041B and TPS2051B
Figure 9-14 Hybrid Self and Bus-Powered Hub Implementation, TPS2042B and TPS2052B
Figure 9-15 Hybrid Self and Bus-Powered Hub Implementation, TPS2043B and TPS2053B
Figure 9-16 Hybrid Self and Bus-Powered Hub Implementation, TPS2044B and TPS2054B